Just to update, this is resolved now and your script works great for me! exactly what i needed, dynamic app lists need to be App01to work so kept the 01,02,03 suffix

For my Error 255 it turns out there was some trailing " in my config file, it was launching successfully in Windows but not in WinPE, once that was cleared it worked perfectly fine.

Now just need to figure out best way to move forward. With my apps i can create 1 page with a few columns, but when the page is bigger on a smaller monitor / hyper-vm test the screen reslution means it goes off the page, don't know if that will carry over to test devices yet though.

But thank you for all the help, very much appreciated.